<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
 <h1>登录界面</h1>
 <form action="/login">
   <input type="text"name="username" placeholder="用户名">
   <input type="password"name="password" placeholder="密码">
   <input type="submit"value="登录">
 </form>

</body>
</html>